30940957 has 12 divisors (see below), whose sum is σ = 33052320. Its totient is φ = 28901400.

The previous prime is 30940933. The next prime is 30941011. The reversal of 30940957 is 75904903.

It is not a de Polignac number, because 30940957 - 2¹⁹ = 30416669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30940057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204832 + ... + 204982.

It is an arithmetic number, because the mean of its divisors is an integer number (2754360).

Almost surely, 2^30940957 is an apocalyptic number.

It is an amenable number.

30940957 is a deficient number, since it is larger than the sum of its proper divisors (2111363).

30940957 is an equidigital number, since it uses as much as digits as its factorization.

30940957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 30940957 is about 5562.4596178309. The cubic root of 30940957 is about 313.9385013507.

The spelling of 30940957 in words is "thirty million, nine hundred forty thousand, nine hundred fifty-seven".